摘要
In the past few years, clear and abundant G-bands in more than ten plants have been successfully observed by use of animal and human G-banding procedures, which mainly include trypsin, ASG, AMD, urea, SDS, NaOH, NaHCO<sub>3</sub> and Utakoji methods etc. However, all G-banding production methods have direct relations with the chemical factors. Although there is usually heat treatment （about 60℃） prior to the G-banding procedure in animal and human chromosomes, G-banding patterns have not yet been reported only by specif-
基金
Project supported by the National Natural Science Foundation of China.
